基于统一强度理论的护巷煤柱尺寸与支护技术研究  

Research on Coal Pillar Size and Supporting Technology Under Based on Strength Theory

作　　者：张念超[1,2] 孙元田[1,2] 蔡胜海 侯保全 杨力[1,2] 曲孔冠 

机构地区：[1]中国矿业大学矿业工程学院,江苏徐州221116 [2]深部煤炭资源开采教育部重点实验室,江苏徐州221116 [3]山东合信安全技术服务有限公司,山东烟台264000

出　　处：《煤矿安全》2016年第6期209-213,共5页Safety in Coal Mines

基　　金：国家自然科学基金面上资助项目(51574224);江苏省自然科学基金面上研究资助项目(BK20141130);中央高校基本科研业务费专项资金资助项目(2014QNB27)

摘　　要：护巷煤柱尺寸与支护参数存在着密切联系,基于统一强度理论,建立支护应力与护巷煤柱尺寸计算模型,模型表明支护应力越大,护巷煤柱尺寸越小。通过数值模拟,分析出不同锚带网支护参数下,支护应力在巷帮竖向、横向的分布规律,并优选出最佳锚带网支护参数。据此计算出某矿7212工作面风巷护巷煤柱为7 m。实践表明,巷帮能得到有效控制,巷道整体稳定。There is a close relationship between protective coal pillar size and supporting parameters. Based on the unified strength theory,we establish the calculation model between supporting stress and protective coal pillar size. The model shows that the larger supporting stress,the smaller the size of the pillar. Through the numerical simulation,different anchor belt mesh support parameters show supporting stress in the lane for vertical,horizontal and overall surface distribution. Based on supporting result and the difficulty of construction,we choose the optimal anchor belt net support parameters. According to calculation,the mine 7212 working face roadway supporting pillar is 7 m. Engineering practice shows that the roadway can be effectively controlled.

关 键 词：统一强度理论 保护煤柱 支护应力 锚带网支护 煤柱尺寸 

分 类 号：TD353[矿业工程—矿井建设]